Here is the full list of all 56 Grim Clicker achievements.
Upgrade weapon to quality 15
Open shard chest
Upgrade weapon to quality 10
Get 20 wisdom
Complete 100 quests
Get 20 dexterity
Remove three locks
Get 15 wisdom
Open 30 chests
Get 20 strenght
Get 15 strenght
Complete 50 quests
Kill 500 champions
Kill 20 bosses
Get 15 dexterity
Open 20 chests
Reach Zone 50
Kill 10 bosses
Perform 50 rituals
Get 10 dixterity
Get 10 wisdom
Upgrade any item
Get 10 strenght
Kill 10000 fireflies
Open 3 boss chests
Kill 5 bosses
Find people on the shard
Upgrade weapon to quality 5
Get 5 wisdom
Perform 20 rituals
Open 10 chests
Remove one lock
Get 5 dixterity
Get level 20
Kill 1000 fireflies
Collect 500 candles
Get 5 strenght
Click 50000 times
Perform 10 rituals
Collect 250 candles
Upgrade any weapon
Kill 25 champions
Get level 10
Complete 10 quests
Collect 100 Candles
Reach Zone 10
Collect 50 Candles
Click 5000 times
Dissasemble any item
Get level 5
Open 1 chest
Kill 20 fireflies
Perform 1 ritual
Reach Zone 5
Kill 1 champion
Click 500 times